GPT-5 Codex (High) vs Mercury 2.5

GPT-5 Codex (High) vs Mercury 2.5. A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5 Codex (High)Not ranked · benchmark data missing
Intelligence
24.90
Total cost
-
InceptionMercury 2.5Off the frontier
Intelligence
12.30
Total cost
$218
Verdict

Comparison incomplete

A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

MetricGPT-5 Codex (High)Mercury 2.5Difference
Intelligence (higher is better)24.912.3−50.6% Mercury 2.5 is 50.6% less intelligent
Total AA cost (lower is better)Not reported$218.11— not comparable
End-to-end time (lower is better)13.09s4.39s−66.5% Mercury 2.5 is 66.5% faster
Price per 1M tokens (in / out)$1.25 / $10.0$0.25 / $0.75
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5 Codex (High): what beats itMercury 2.5: what beats it
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-codex/mercury-2-5 · Markdown: /api/v1/compare/gpt-5-codex/mercury-2-5?format=md · llms.txt · agent skill